[Qgis-developer] Plugin Dependencies

Geo DrinX geodrinx at gmail.com
Wed Oct 21 06:28:09 PDT 2015

Ola Victor !  :)

2015-10-07 17:50 GMT+02:00 Victor Olaya <volayaf at gmail.com>:

> At the moment, you have to ship them with your plugin, in the plugin
> zip file. If the lib uses native code, you will need to include
> binaries for all OSs that you want to support, and the corresponding
> mechanism to pick one or the other.
> As an example, you can see how it is done in this plugin
> https://github.com/boundlessgeo/qgis-geoserver-plugin/blob/master/src/geoserverexplorer/__init__.py
> Dependencies are stored in a folder called "ext-libs", which is added
> to the python path by the plugin
> Notice that that folder is not in the repo, there is a paver task to
> fetch the dependencies from PyPi
> Notice also that QGIS has its folder with python libs
> https://github.com/qgis/QGIS/tree/master/python/ext-libs
> Make sure that the libs you require are not already in there

In my case ( GEarthView QGIS plugin )  I have  two external libraries:


that I need to install manually  :(

On windows,  they need to be copied for each new version of QGIS, inside
the folder:

QGIS VERSION\apps\Python27\Lib\site-packages\

Instead, on MacOSX, they are  (once and for all) inside the standard
python  library folder, as I explained in my blog:


I have tried several times to make sure that it was not necessary to
install anything, including the libraries in my plugins, so far I have not
succeeded.   So, that your message has rekindled my hopes  :)    but there
are some things I do not understand, in your explanation  (my fault).

Here are my steps:

1) I modified my  geodrinx/__init__.py      adding:

site.addsitedir(os.path.abspath(os.path.dirname(__file__) + '/ext-libs'))

Question:  where need I to create this  ext-libs   folder ?    I looked
into the plugin that you indicate, but I found no "ext-libs" folder.

Could you please explain me (us)  better ?

Thank you much

A presto

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